PLEISTOCENE VERTEBRATES FROIM CUMBERLAND CAVE 



17 



teeth and the relatively large M^ as compared with M^ The Field 

 Museum M^ possesses a well-developed hypocone, as do several of the 

 National Museum specimens, but, as anticipated by Patterson, this 

 character is variable and in some dentitions where the heel of M* is 

 narrower the hypocone is not so prominent. However, the reduction 

 of the hypocone in these cases does not reach the stage common in C. 

 dims of Rancho La Brea. 



Table 4. — Measurements {in millimeters) of mandible and inferior dentition of 



Canis armbrusteri 



Measurement 



U.S. 

 N.M. 



no. 



7662 

 (type) 



U.S. 



N.M. 



11881 



U.S. 



N.M. 



8168 



U.S. 



N.M. 



U.S. 



N.M. 



no. 



11887 



U.S. 



N.M. 



no. 



8172 



Mandible 



Depth of jaw below anterior part of Pa- 

 Depth of Jaw below heel of Mi 



Thickness of jaw below heel of Mi 



36.3 

 16.3 



Inferior dentition 



Length of tooth series from anterior margin of canine 



alveolus to posterior margin of Mj 



C, anteroposterior diameter at base of enamel-- 



C, transverse diameter at base of enamel 



Pi, anteroposterior diameter-. 



Pi, greatest transverse diameter 



Pj, anteroposterior diameter 



Pj, greatest transverse diameter 



Pi, anteroposterior diameter 



Pj, greatest transverse diameter 



P4, anteroposterior diameter 



Pj, greatest transverse diameter 



Mi, anteroposterior diameter 



Ml, greatest transverse width of trigonid 



Ml, greatest transverse width of talonid 



Mj, anteroposterior diameter 



Ms, greatest transverse diameter 



Ms, anteroposterior diameter 



M3, greatest transverse diameter 



27 



32.6 



16.7 



2 127 

 »16.5 

 1 11.3 



7 



6.2 



17.9 

 9.1 

 31 

 12.5 

 12.5 

 13.6 

 10.4 



15.4 

 6.7 

 17.7 

 9.2 

 31 



13.2 

 12.9 

 13.3 



1 130 

 1 14 

 10 

 6.6 

 4.8 

 13.8 

 6.4 

 15.8 

 6.9 

 17.8 

 8.8 

 '31 



12.1 



1 11.9 



1 13.5 



19.9 



31.3 

 15 



25.5 



29 



14.6 



21.4 

 '25 

 12.9 



'106 

 « 12 



16 

 7.1 

 118 

 •9.5 

 129.4 

 12.2 

 112.1 

 13.5 

 1 10 

 7.2 

 5.6 



13.9 

 5.4 

 14.6 



18.3 

 9.6 



12.4 

 5.6 



13.4 

 6.8 



16 

 7.7 



27.9 



10.6 



U2.7 

 113 



10.2 

 6.5 



15.8 



12.4 



• Approximate. 



C. (Aenoajon) dims is distinctly more robust than C. armbrusteri. 

 The specimens from Rancho La Brea have a much wider rostrum and 

 the carnassial teeth are more pov/erfully built. The larger limb bones 

 in the Cumberland Cave collection, presumably referable to C. arm- 

 brusteri, are equally as long but slenderer than corresponding elements 

 of various individuals of the Brea wolf in the National Museum col- 

 lections. 



The coyotelike characters in the dentition of C. armbrusteri pointed 

 out by Gidley do not necessarily require that this form be grouped 

 with the coyotes in the subgenus Lyciscus or Thos but emphasize the 

 specific separation of C. armbrusteri from the living wolves of North 



